right now I have the rig in my sig. When games like crysis and other demanding games come out, would it to be worth it to upgrade the cpu/mobo/memory with an e6600, a mobo like asus p5w, and like 2gb of nice ddr2 memory and keep my current 7900gtx or keep what I got and just maybe upgrade the video card to maybe an 8800gtx when it comes out?